Probably, if you look in your checklist, you will not find a 'land immediately' emergency. You, personally might think an emergency warrants a 'land immediately' label, but the manufacturer's lawyers probably don't want to ever see those words in the flight manual / checklist, for liability reasons.
Shawn, perhaps a little too cynical. All the Bells I've flown (apart from, perhaps, the 47), and every Eurocopter product I'm type rated in, contain the good old "LAND IMMEDIATELY". Surely not even American lawyers would want helicopters to remain in flight if a "Land Immediately" would have been the manufacturers original advice.